A 4.74 -m-internal-diameter sphericaltank made of 1.5- cm-thick stainlesssteel (k = 15 W/m.°C) is used to storeiced water at 0°C in a room at 20°C.The walls of the room are also at 20°C.The outer surface of the tank is black(emissivity ɛ = 1), and heat transferbetween the outer surface of the tankand the surroundings is by naturalconvection and radiation. Assumingthe entire steel tank to be at 0°C andthus the thermal resistance of the tankto be negligible. What is the rate ofheat transfer to the iced water in thetank by Radiation (W)? Select one:

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Answered: A 4.74 -m-internal-diameter spherical…

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter9: Heat Transfer With Phase Change

Section: Chapter Questions

Problem 9.37P

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An 8-m-internal-diameter spherical tank made of 1.5-cm-thick stainless steelAISI 302 is used to store iced water at 0°C. The tank is located in a roomwith temperature 25°C. The outer surface of the tank is black (emissivity, ε= 1), the heat transfer between the outer surface of the tank and thesurroundings is by natural convection and radiation. The convection heattransfer coefficients at the inner and the outer surfaces of the tank are 80W/m2K and 10W/m2K, respectively; and the outer surface temperature of thetank is 5°C. Draw the equivalent thermal circuit of the system. Determine the total heat transfer rate to the iced water in the tank and the total amount of ice at 0°C that melts after 24 hours.
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